CN111022194A - Compression ignition detection device suitable for generator set and control method thereof - Google Patents

Compression ignition detection device suitable for generator set and control method thereof Download PDF

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Publication number
CN111022194A
CN111022194A CN201911261893.4A CN201911261893A CN111022194A CN 111022194 A CN111022194 A CN 111022194A CN 201911261893 A CN201911261893 A CN 201911261893A CN 111022194 A CN111022194 A CN 111022194A
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resistor
generator set
capacitor
air pressure
controller
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CN111022194B (en
Inventor
宁涛
张福才
罗雄彬
郭周劳
胡国昌
张宇
丁建桥
余成袁
刘键
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Chongqing Dinking Power Machinery Co ltd
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Chongqing Dinking Power Machinery Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/12—Engines characterised by fuel-air mixture compression with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D45/00—Electrical control not provided for in groups F02D41/00 - F02D43/00
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The invention provides a compression ignition detection device suitable for a generator set and a control method thereof, wherein the compression ignition detection device suitable for the generator set comprises the generator set, and the generator set comprises an engine and a generator which are arranged on a base; the air pressure detection module of the generator set is arranged at the altitude and air pressure of the environment where the generator set is located and the accelerator electromagnetic valve arranged at the position of an engine accelerator opening, the air pressure signal output end of the air pressure detection module is connected with the air pressure signal input end of the controller, and the accelerator opening signal output end of the controller is connected with the accelerator opening signal input end of the accelerator electromagnetic valve. The invention can realize the compression ignition starting of the generator set in the plateau altitude area.

Description

Compression ignition detection device suitable for generator set and control method thereof
Technical Field
The invention relates to a generator set, in particular to a compression ignition detection device suitable for the generator set and a control method thereof.
Background
The earth is surrounded by a layer of thick air which is mainly composed of nitrogen, oxygen, carbon dioxide, water vapor and a mixture of helium, neon, argon and other gases, and the whole of the layer of air is generally called as the atmosphere. It is distributed around the earth with a total thickness of 1000 km, and all objects immersed in the atmosphere are exposed to the pressure of the atmosphere, just as objects immersed in water are exposed to the pressure of water. With the increase of altitude, the atmospheric pressure reduces, and the oxygen content in its air descends, and when diesel generating set started in high altitude area (being more than or equal to 3000m), because air and oxygen concentration are maladjusted, the generating set was difficult for compression ignition, how to realize generating set compression ignition and start in high altitude area is the problem that awaits the solution at present.
Disclosure of Invention
The invention aims to at least solve the technical problems in the prior art, and particularly provides a compression ignition detection device suitable for a generator set and a control method thereof.
In order to achieve the above object, the present invention provides a compression ignition detection device for a generator set, which comprises a generator set, wherein the generator set comprises an engine and a generator which are arranged on a base; the air pressure detection module of the generator set is arranged at the altitude and air pressure of the environment where the generator set is located and the accelerator electromagnetic valve arranged at the position of an engine accelerator opening, the air pressure signal output end of the air pressure detection module is connected with the air pressure signal input end of the controller, and the accelerator opening signal output end of the controller is connected with the accelerator opening signal input end of the accelerator electromagnetic valve. According to the invention, the air pressure of the environment where the generator set is located is acquired through the air pressure detection module, the adjustment signal is sent to the accelerator electromagnetic valve, the opening degree of the accelerator is adjusted, and the compression ignition starting of the generator set in the plateau altitude area is realized.
In a preferred embodiment of the present invention, the air pressure detecting module includes: the first end of a piezoresistor Ra is respectively connected with the first end of a piezoresistor Rd and the positive phase input end of an amplifier U2, the first end of a piezoresistor Rc is respectively connected with the first end of a piezoresistor Rb and the positive phase input end of an amplifier U3, the second end of the piezoresistor Ra and the second end of the piezoresistor Rc are respectively connected with the output end of an amplifier U1, the positive phase input end of an amplifier U1 is respectively connected with the first end of a resistor R1 and the first end of a resistor R2, the first end of a resistor R1 is connected with a +5V power supply, the second end of a resistor R2 is connected with a power ground, and the reverse phase input end of the amplifier U1 is respectively connected with the first end of a resistor R3, the second end of the resistor Rb and;
an inverting input end of the amplifier U2 is connected with a first end of a resistor R4 and a first end of a resistor R5 respectively, a second end of the resistor R5 is connected with a first end of an adjustable resistor RV2 and an adjusting end of an adjustable resistor RV2, a second end of an adjustable resistor RV2 is connected with a first end of a resistor R6 and an inverting input end of the amplifier U3 respectively, an output end of an amplifier U2 and a second end of the resistor R4 are connected with a first end of a resistor R8 respectively, and an output end of the amplifier U3 and a second end of a resistor R6 are connected with a first end of a resistor R9 respectively;
the second end of the resistor R8 is connected with the first end of the resistor R11 and the inverting input end of the amplifier U4, the second end of the resistor R11 is connected with the output end of the amplifier U4, the second end of the resistor R9 is connected with the first end of the resistor R10 and the non-inverting input end of the amplifier U4, the second end of the resistor R10 is connected with the adjusting end of the adjustable resistor RV1, the first end of the adjustable resistor RV1 is connected with the first end of the resistor R7, the second end of the resistor R7 is connected with a +5V power supply, and the second end of the adjustable resistor RV1 is connected with the ground. Resistor R1, resistor R2, resistor R3 and amplifier U1The current source supplies power to a full-bridge pressure detector composed of four piezoresistors (namely a piezoresistor Ra, a piezoresistor Rb, a piezoresistor Rc and a piezoresistor Rd), and the power supply current input to the pressure detector is
Figure BDA0002311813110000021
The signal amplifying circuit composed of resistors R4-R11, resistor RV1, resistor RV2 and amplifiers U2-U4 amplifies the signal output by the pressure sensor, and the amplified voltage signal is
Figure BDA0002311813110000022
V2Is the voltage value, V, of the non-inverting input of the input amplifier U23Is the voltage value at the non-inverting input of the input amplifier U3.
In a preferred embodiment of the present invention, the power generating system further comprises a GPS module disposed on the power generating unit, wherein a position signal output end of the GPS module is connected to a position signal input end of the controller;
the GPS module comprises a GPS signal processing output unit, an antenna state detection unit and a GPS chip U5; the data signal output end of the GPS signal processing output unit is connected with the data signal input end of the GPS chip U5, the signal end of the antenna state detection unit is connected with the GPS chip U5, and the geographic position signal output end of the GPS chip U5 is connected with the geographic position signal input end of the controller. The generator set is positioned, and the altitude of the generator set is determined.
In a preferred embodiment of the present invention, the GPS signal processing output unit includes: the antenna ANT is respectively connected with a first end of a capacitor C201 and a first end of a resistor R201, a second end of the capacitor C201 is respectively connected with a first end of the capacitor C202 and a first end of an inductor L201, a second end of the capacitor C202 is connected with a power ground, a second end of the inductor L201 is connected with a signal input end IN of a signal amplifying chip U15, a ground end GND of the signal amplifying chip U15 is connected with the power ground, an adjusting end PS of the signal amplifying chip U15 and a power end VCC of the signal amplifying chip U15 are respectively connected with a first end of the capacitor C203, a first end of the resistor R203, a first end of the inductor L202 and a +3.3V power supply, a second end of the capacitor C203 is connected with the power ground, a second end of the resistor R203 and a second end of the inductor L202 are respectively connected with a signal output end OUT of the signal amplifying chip U15 and a first end of the inductor L203, a second end of the inductor L203 is respectively connected with a first end of the capacitor C204 and a first end of the resistor R202, a second end of the resistor R201 and a second end, the second terminal of the inductor L155 is connected to the first terminal of the capacitor C288, and the second terminal of the capacitor C288 is connected to the power ground; the second end of the capacitor C204 is connected to the signal INPUT terminal INPUT of the filter chip U14, the ground terminal GND1 of the filter chip U14, the ground terminal GND2 of the filter chip U14 and the ground terminal GND3 of the filter chip U14 are respectively connected to the power ground, the signal OUTPUT terminal OUTPUT of the filter chip U14 is connected to the first end of the capacitor C233, the second end of the capacitor C233 is respectively connected to the first end of the capacitor C144 and the first end of the inductor L55, the second end of the capacitor C144 is connected to the power ground, and the second end of the inductor L55 is connected to the data signal INPUT terminal of the GPS chip U5. The circuit realizes the optimization processing of received signals and reduces the signal interference caused by environmental factors.
In a preferred embodiment of the present invention, the antenna state detection unit includes: an emitter of the transistor Q41 is connected with a +3.3V power supply, a first end of the resistor R41 and a first end of the capacitor C48, a second end of the capacitor C48 is connected with a power ground, a second end of the resistor R41 is connected with a base of the transistor Q41 and a collector of the transistor Q42, an emitter of the transistor Q42 is connected with a first end of the capacitor C42, a first end of the capacitor C43 and a power ground, a second end of the capacitor C42, a second end of the capacitor C43 and a collector of the transistor Q41 are connected with a first end of the resistor R44, a first end of the resistor R45 and a first end of the capacitor C44, a second end of the resistor R45 is connected with an emitter of the transistor Q43, a base of the transistor Q43 is connected with a base of the transistor Q44, a collector of the transistor Q43 and a first end of the resistor R46, and a second end of the resistor R46 is connected with; a second end of the resistor R44 and a second end of the capacitor C44 are respectively connected with a first end of the inductor L41 and an emitter of the transistor Q44, a collector of the transistor Q44 is respectively connected with a first end of the resistor R47 and a first end of the resistor R48, and a second end of the resistor R47 is connected with the power ground; the second end of the resistor R48 is connected with an antenna state detection end GPIO8 of the GPS chip U5, the second end of the inductor L41 is respectively connected with the first end of the capacitor C45, the first end of the resistor R49 and an antenna voltage input end V _ ANT of the GPS chip U5, and the second end of the resistor R49 is connected with the antenna state detection end GPIO 11; the base electrode of the triode Q42 is respectively connected with the first end of the capacitor C41, the first end of the capacitor C46, the first end of the resistor R42 and the first end of the resistor R43, the second end of the capacitor C46 and the second end of the resistor R42 are respectively connected with the power ground, and the second end of the capacitor C41 and the second end of the resistor R43 are respectively connected with the antenna feed switch end ANT _ ON of the GPS chip U5. The antenna detection and short-circuit protection are realized, and the antenna detection and short-circuit protection device is safe and reliable.
In a preferred embodiment of the present invention, the power generating set further includes a wireless transceiver module disposed on the power generating set, a transceiver end of the wireless transceiver module is connected to a wireless transceiver end of the controller, and the controller communicates with the remote terminal through the wireless transceiver module. The data of the generator set collected by the controller are sent to the remote terminal, the opening of the accelerator electromagnetic valve calculated by the remote terminal is sent to the controller, the opening of the accelerator electromagnetic valve is adjusted, and the method is fast, simple and convenient.
In a preferred embodiment of the present invention, the power generating system further includes a first temperature sensor arranged on the power generating unit and used for measuring an environment in which the power generating unit is located, a humidity sensor used for measuring an environment humidity in which the power generating unit is located, and a second temperature sensor arranged on the engine cylinder and used for measuring an engine internal cylinder temperature, a temperature signal output end of the first temperature sensor is connected to a first temperature signal input end of the controller, a temperature signal output end of the second temperature sensor is connected to a second temperature signal input end of the controller, and a temperature signal output end of the humidity sensor is connected to a humidity signal input end of the controller.
The invention also discloses a control method suitable for the compression ignition detection device of the generator set, which comprises the following steps:
s1, initializing the system, sending the air pressure value of the position where the collected generator set is located to the air pressure detection module by the controller, and judging the size of the air pressure value of the position where the collected generator set is located and the preset air pressure value:
if the collected air pressure value of the position of the generator set is smaller than the preset air pressure value, the controller sends an adjusting value signal to the accelerator electromagnetic valve; step S2 is executed;
if the collected air pressure value of the position where the generator set is located is larger than or equal to the preset air pressure value, whether the generator set outputs electric energy to the electric equipment is judged:
if the generator set outputs electric energy to the electric equipment, the generator set is started in a compression ignition mode;
if the generator set does not output electric energy to the electric equipment, the generator set is not started by compression ignition; step S3 is executed;
s2, controlling the injection quantity of the throttle diesel oil to be reduced by the throttle electromagnetic valve according to the regulating value signal sent by the controller; if the throttle diesel injection quantity is less than or equal to the preset diesel injection quantity, executing step S3;
s3, the controller sends a signal for opening the electromagnetic valve to the electromagnetic valve switch, and adjusts the oxygen content of the air to the engine inlet from small to large until the generator set starts compression ignition.
In a preferred embodiment of the present invention, the method for calculating the opening degree of the throttle solenoid valve includes the steps of:
s11, the remote terminal sends a data acquisition command to the generator set in the plateau area to form a generator set data list in the plateau area;
s12, remote terminal computing
Figure BDA0002311813110000051
H is the altitude corresponding to the geographic position measured by the GPS module, PiThe air pressure value of the position of the generator set is measured by an air pressure detection module; i is the serial number of the generator set,
Figure BDA0002311813110000052
the real-time temperature of the interior of the generator set,
Figure BDA0002311813110000061
as a generatorReal-time temperature of the environment in which the stack is located; sigma is a conversion proportion coefficient between the air pressure value and the opening degree of the accelerator; qFront sideOpening degree, Q, of an accelerator electromagnetic valve before adjustment of a generator setRear endThe opening degree of an accelerator electromagnetic valve when the generator set is adjusted and is started in compression ignition, P is an air pressure value in a standard condition, s is a humidity value of the environment where the generator set is located, N is the total number of the generator sets in a plateau area, α is an internal temperature regulating factor, β is an environment temperature regulating factor;
s13, the controller calculates the current accelerator opening of the generator set, and the calculation method of the current accelerator opening of the generator set comprises the following steps:
Figure BDA0002311813110000062
q is the opening degree of the throttle electromagnetic valve before the current regulation of the generator set, Q' is the opening degree of the throttle electromagnetic valve after the current regulation of the generator set, T is the temperature value of the environment where the generator set is located, and s is the humidity value of the environment where the generator set is located.
In conclusion, due to the adoption of the technical scheme, the invention can realize the compression ignition starting of the generator set in the plateau altitude area.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic block diagram of the connection of the present invention.
FIG. 2 is a schematic diagram of the circuit connection of the air pressure detecting module according to the present invention.
FIG. 3 is a schematic diagram of the circuit connection of the GPS module of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The invention provides a compression ignition detection device suitable for a generator set, which comprises the generator set, as shown in figure 1, wherein the generator set comprises an engine and a generator which are arranged on a base; the air pressure detection module of the generator set is arranged at the altitude and air pressure of the environment where the generator set is located and the accelerator electromagnetic valve arranged at the position of an engine accelerator opening, the air pressure signal output end of the air pressure detection module is connected with the air pressure signal input end of the controller, and the accelerator opening signal output end of the controller is connected with the accelerator opening signal input end of the accelerator electromagnetic valve. In the embodiment, the generator set is a diesel generator set, the controller is an STC89C series single chip microcomputer, specifically, a STC89C52RC single chip microcomputer controller can be adopted, and the type of the accelerator electromagnetic valve can be 71216SN1BL00 or 71215SN1QN 00.
In a preferred embodiment of the present invention, as shown in fig. 2, the air pressure detecting module includes: the first end of a piezoresistor Ra is respectively connected with the first end of a piezoresistor Rd and the positive phase input end of an amplifier U2, the first end of a piezoresistor Rc is respectively connected with the first end of a piezoresistor Rb and the positive phase input end of an amplifier U3, the second end of the piezoresistor Ra and the second end of the piezoresistor Rc are respectively connected with the output end of an amplifier U1, the positive phase input end of an amplifier U1 is respectively connected with the first end of a resistor R1 and the first end of a resistor R2, the first end of a resistor R1 is connected with a +5V power supply, the second end of a resistor R2 is connected with a power ground, and the reverse phase input end of the amplifier U1 is respectively connected with the first end of a resistor R3, the second end of the resistor Rb and;
an inverting input end of the amplifier U2 is connected with a first end of a resistor R4 and a first end of a resistor R5 respectively, a second end of the resistor R5 is connected with a first end of an adjustable resistor RV2 and an adjusting end of an adjustable resistor RV2, a second end of an adjustable resistor RV2 is connected with a first end of a resistor R6 and an inverting input end of the amplifier U3 respectively, an output end of an amplifier U2 and a second end of the resistor R4 are connected with a first end of a resistor R8 respectively, and an output end of the amplifier U3 and a second end of a resistor R6 are connected with a first end of a resistor R9 respectively;
the second end of the resistor R8 is connected with the first end of the resistor R11 and the inverting input end of the amplifier U4, the second end of the resistor R11 is connected with the output end of the amplifier U4, the second end of the resistor R9 is connected with the first end of the resistor R10 and the non-inverting input end of the amplifier U4, the second end of the resistor R10 is connected with the adjusting end of the adjustable resistor RV1, the first end of the adjustable resistor RV1 is connected with the first end of the resistor R7, the second end of the resistor R7 is connected with a +5V power supply, and the second end of the adjustable resistor RV1 is connected with the ground. In this embodiment, the resistance of the resistor R1 is 75K, the resistance of the resistor R2 is 6.8K, the resistance of the resistor R3 is 820 Ω, the resistance of the resistor R4 is 12K, the resistance of the resistor R5 is 330 Ω, the resistance of the adjustable resistor RV2 is 1K, the resistance of the resistor R6 is 12K, the resistance of the resistor R8 is 5K, the resistance of the resistor R9 is 5K, the resistance of the resistor R10 is 50K, the resistance of the resistor R7 is 2K, the resistance of the adjustable resistor RV1 is 10K, the resistance of the resistor R11 is 50K, and the models of the amplifiers U1 to U4 are OP series amplifiers, specifically, an OP07 amplifier can be used.
In a preferred embodiment of the present invention, as shown in fig. 3, the present invention further includes a GPS module disposed on the power generator set, wherein a position signal output terminal of the GPS module is connected to a position signal input terminal of the controller;
the GPS module comprises a GPS signal processing output unit, an antenna state detection unit and a GPS chip U5; the data signal output end of the GPS signal processing output unit is connected with the data signal input end of the GPS chip U5, the signal end of the antenna state detection unit is connected with the GPS chip U5, and the geographic position signal output end of the GPS chip U5 is connected with the geographic position signal input end of the controller. In this embodiment, the power source VCC of the GPS chip U5 is connected to the +3.3V power source and the anode of the diode D111, the cathode of the diode D111 and the cathode of the diode D112 are connected to the standby power source V _ BCKP of the GPS chip U5, the anode of the diode D112 is connected to the anode of the button battery J5, the cathode of the button battery J5 is connected to the power ground, when an external power failure is prevented, the button battery J5 supplies power to the GPS chip U5, and the diode D111 and the diode D112 perform a one-way current flow, thereby preventing the waste of the electric quantity of the button battery J5.
In a preferred embodiment of the present invention, the GPS signal processing output unit includes: the antenna ANT is respectively connected with a first end of a capacitor C201 and a first end of a resistor R201, a second end of the capacitor C201 is respectively connected with a first end of the capacitor C202 and a first end of an inductor L201, a second end of the capacitor C202 is connected with a power ground, a second end of the inductor L201 is connected with a signal input end IN of a signal amplifying chip U15, a ground end GND of the signal amplifying chip U15 is connected with the power ground, an adjusting end PS of the signal amplifying chip U15 and a power end VCC of the signal amplifying chip U15 are respectively connected with a first end of the capacitor C203, a first end of the resistor R203, a first end of the inductor L202 and a +3.3V power supply, a second end of the capacitor C203 is connected with the power ground, a second end of the resistor R203 and a second end of the inductor L202 are respectively connected with a signal output end OUT of the signal amplifying chip U15 and a first end of the inductor L203, a second end of the inductor L203 is respectively connected with a first end of the capacitor C204 and a first end of the resistor R202, a second end of the resistor R201 and a second end, the second terminal of the inductor L155 is connected to the first terminal of the capacitor C288, and the second terminal of the capacitor C288 is connected to the power ground; the second end of the capacitor C204 is connected to the signal INPUT terminal INPUT of the filter chip U14, the ground terminal GND1 of the filter chip U14, the ground terminal GND2 of the filter chip U14 and the ground terminal GND3 of the filter chip U14 are respectively connected to the power ground, the signal OUTPUT terminal OUTPUT of the filter chip U14 is connected to the first end of the capacitor C233, the second end of the capacitor C233 is respectively connected to the first end of the capacitor C144 and the first end of the inductor L55, the second end of the capacitor C144 is connected to the power ground, and the second end of the inductor L55 is connected to the data signal INPUT terminal of the GPS chip U5. In this embodiment, the capacitance of the capacitor C201 is 120pF, the capacitance of the capacitor C202 is 1.3pF, the capacitance of the capacitor C203 is 1000pF, the capacitance of the capacitor C204 is 120pF, the capacitance of the capacitor C233 is 22pF, the capacitance of the capacitor C144 is 2.7pF, the capacitance of the capacitor C288 is 27pF, the resistances of the resistor R201 and the resistor R202 are 0 Ω, the resistance of the resistor R203 is 470 Ω, the inductance of the inductor L201 is 5.6nH, the inductance of the inductor L202 is 18nH, the inductance of the inductor L203 is 10nH, the inductance of the inductor L155 is 100nH, the model of the signal amplification chip U15 is uPC8231, and the model of the filter chip U14 is B7839.
In a preferred embodiment of the present invention, the antenna state detection unit includes: an emitter of the transistor Q41 is connected with a +3.3V power supply, a first end of the resistor R41 and a first end of the capacitor C48, a second end of the capacitor C48 is connected with a power ground, a second end of the resistor R41 is connected with a base of the transistor Q41 and a collector of the transistor Q42, an emitter of the transistor Q42 is connected with a first end of the capacitor C42, a first end of the capacitor C43 and a power ground, a second end of the capacitor C42, a second end of the capacitor C43 and a collector of the transistor Q41 are connected with a first end of the resistor R44, a first end of the resistor R45 and a first end of the capacitor C44, a second end of the resistor R45 is connected with an emitter of the transistor Q43, a base of the transistor Q43 is connected with a base of the transistor Q44, a collector of the transistor Q43 and a first end of the resistor R46, and a second end of the resistor R46 is connected with; a second end of the resistor R44 and a second end of the capacitor C44 are respectively connected with a first end of the inductor L41 and an emitter of the transistor Q44, a collector of the transistor Q44 is respectively connected with a first end of the resistor R47 and a first end of the resistor R48, and a second end of the resistor R47 is connected with the power ground; the second end of the resistor R48 is connected with an antenna state detection end GPIO8 of the GPS chip U5, the second end of the inductor L41 is respectively connected with the first end of the capacitor C45, the first end of the resistor R49 and an antenna voltage input end V _ ANT of the GPS chip U5, and the second end of the resistor R49 is connected with the antenna state detection end GPIO 11; the base electrode of the triode Q42 is respectively connected with the first end of the capacitor C41, the first end of the capacitor C46, the first end of the resistor R42 and the first end of the resistor R43, the second end of the capacitor C46 and the second end of the resistor R42 are respectively connected with the power ground, and the second end of the capacitor C41 and the second end of the resistor R43 are respectively connected with the antenna feed switch end ANT _ ON of the GPS chip U5. In this embodiment, the type of the transistor Q41 is BCB57, the type of the transistor Q42 is 9014, the types of the transistor Q43 and the transistor Q44 are 9012, the capacitance value of the capacitor C48 is 0.1uF, the capacitance value of the capacitor C46 is 100pF, the capacitance value of the capacitor C42 is 100pF, the capacitance value of the capacitor C43 is 0.1uF, the capacitance value of the capacitor C44 is 2.2uF/6V, the capacitance value of the capacitor C45 is 1uF, the capacitance value of the capacitor C41 is 0.1uF, the resistance value of the resistor R41 is 680 Ω, the resistance value of the resistor R42 is 4.7K, the resistance value of the resistor R84 is 10K, the resistance value of the resistor R44 is 10, the resistance value of the resistor R45 is 56 Ω, the resistance value of the resistor R46 is 5.6K, the resistance value of the resistor R47 is 10K, the resistance value of the resistor R5 Ω is 0 Ω, the resistance value of the resistor R580 Ω is 10 Ω, the resistance value of the inductor R58h is 3724 nH 33.
In a preferred embodiment of the present invention, the power generating set further includes a wireless transceiver module disposed on the power generating set, a transceiver end of the wireless transceiver module is connected to a wireless transceiver end of the controller, and the controller communicates with the remote terminal through the wireless transceiver module.
In a preferred embodiment of the present invention, the power generating system further includes a first temperature sensor arranged on the power generating unit and used for measuring an environment in which the power generating unit is located, a humidity sensor used for measuring an environment humidity in which the power generating unit is located, and a second temperature sensor arranged on the engine cylinder and used for measuring an engine internal cylinder temperature, a temperature signal output end of the first temperature sensor is connected to a first temperature signal input end of the controller, a temperature signal output end of the second temperature sensor is connected to a second temperature signal input end of the controller, and a temperature signal output end of the humidity sensor is connected to a humidity signal input end of the controller.
The invention also discloses a control method suitable for the compression ignition detection device of the generator set, which comprises the following steps:
s1, initializing the system, sending the air pressure value of the position where the collected generator set is located to the air pressure detection module by the controller, and judging the size of the air pressure value of the position where the collected generator set is located and the preset air pressure value:
if the collected air pressure value of the position of the generator set is smaller than the preset air pressure value, the controller sends an adjusting value signal to the accelerator electromagnetic valve; step S2 is executed;
if the collected air pressure value of the position where the generator set is located is larger than or equal to the preset air pressure value, whether the generator set outputs electric energy to the electric equipment is judged:
if the generator set outputs electric energy to the electric equipment, the generator set is started in a compression ignition mode;
if the generator set does not output electric energy to the electric equipment, the generator set is not started by compression ignition; step S3 is executed;
s2, controlling the injection quantity of the throttle diesel oil to be reduced by the throttle electromagnetic valve according to the regulating value signal sent by the controller; if the throttle diesel injection quantity is less than or equal to the preset diesel injection quantity, executing step S3;
s3, the controller sends a signal for opening the electromagnetic valve to the electromagnetic valve switch, and adjusts the oxygen content of the air to the engine inlet from small to large until the generator set starts compression ignition.
In a preferred embodiment of the present invention, the method for calculating the opening degree of the throttle solenoid valve includes the steps of:
s11, the remote terminal sends a data acquisition command to the generator set in the plateau area to form a generator set data list in the plateau area;
s12, remote terminal computing
Figure BDA0002311813110000111
Wherein, PhLooking up a table of the obtained air pressure value when the generator set is at the altitude of h; h is the altitude, P, corresponding to the geographic position measured by the GPS moduleiThe air pressure value of the position of the generator set is measured by an air pressure detection module; i is the serial number of the generator set,
Figure BDA0002311813110000112
the real-time temperature of the interior of the generator set,
Figure BDA0002311813110000113
the real-time temperature of the environment where the generator set is located; sigma is a conversion proportion coefficient between the air pressure value and the opening degree of the accelerator; qFront sideOpening degree, Q, of an accelerator electromagnetic valve before adjustment of a generator setRear endThe method is characterized in that the opening degree of an accelerator electromagnetic valve is adjusted after a generator set is started in compression ignition, P is an air pressure value in a standard condition, s is a humidity value of the environment where the generator set is located, N is the total number of the generator sets in a plateau area, α is an internal temperature adjusting factor, β is an environment temperature adjusting factor, and sigma is summation of the environment temperature adjusting factor and the environment temperature adjusting factor.
S13, the controller calculates the current accelerator opening of the generator set, and the calculation method of the current accelerator opening of the generator set comprises the following steps:
Figure BDA0002311813110000121
q is the opening degree of the throttle electromagnetic valve before the current regulation of the generator set, Q' is the opening degree of the throttle electromagnetic valve after the current regulation of the generator set, T is the temperature value of the environment where the generator set is located, and s is the humidity value of the environment where the generator set is located.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A compression ignition detection device suitable for a generator set comprises the generator set, wherein the generator set comprises an engine and a generator which are installed on a base; the air pressure detection device is characterized by further comprising a controller arranged on the generator set and an air pressure detection module used for detecting the air pressure of the environment, where the generator set is located, and an accelerator electromagnetic valve arranged at an engine accelerator opening, wherein the air pressure signal output end of the air pressure detection module is connected with the air pressure signal input end of the controller, and the accelerator opening signal output end of the controller is connected with the accelerator opening signal input end of the accelerator electromagnetic valve.
2. The apparatus adapted for genset compression ignition detection of claim 1, wherein the air pressure detection module comprises: the first end of a piezoresistor Ra is respectively connected with the first end of a piezoresistor Rd and the positive phase input end of an amplifier U2, the first end of a piezoresistor Rc is respectively connected with the first end of a piezoresistor Rb and the positive phase input end of an amplifier U3, the second end of the piezoresistor Ra and the second end of the piezoresistor Rc are respectively connected with the output end of an amplifier U1, the positive phase input end of an amplifier U1 is respectively connected with the first end of a resistor R1 and the first end of a resistor R2, the first end of a resistor R1 is connected with a +5V power supply, the second end of a resistor R2 is connected with a power ground, and the reverse phase input end of the amplifier U1 is respectively connected with the first end of a resistor R3, the second end of the resistor Rb and;
an inverting input end of the amplifier U2 is connected with a first end of a resistor R4 and a first end of a resistor R5 respectively, a second end of the resistor R5 is connected with a first end of an adjustable resistor RV2 and an adjusting end of an adjustable resistor RV2, a second end of an adjustable resistor RV2 is connected with a first end of a resistor R6 and an inverting input end of the amplifier U3 respectively, an output end of an amplifier U2 and a second end of the resistor R4 are connected with a first end of a resistor R8 respectively, and an output end of the amplifier U3 and a second end of a resistor R6 are connected with a first end of a resistor R9 respectively;
the second end of the resistor R8 is connected with the first end of the resistor R11 and the inverting input end of the amplifier U4, the second end of the resistor R11 is connected with the output end of the amplifier U4, the second end of the resistor R9 is connected with the first end of the resistor R10 and the non-inverting input end of the amplifier U4, the second end of the resistor R10 is connected with the adjusting end of the adjustable resistor RV1, the first end of the adjustable resistor RV1 is connected with the first end of the resistor R7, the second end of the resistor R7 is connected with a +5V power supply, and the second end of the adjustable resistor RV1 is connected with the ground.
3. The device suitable for detecting compression ignition of the generator set according to claim 1, further comprising a GPS module arranged on the generator set, wherein a position signal output end of the GPS module is connected with a position signal input end of the controller;
the GPS module comprises a GPS signal processing output unit, an antenna state detection unit and a GPS chip U5; the data signal output end of the GPS signal processing output unit is connected with the data signal input end of the GPS chip U5, the signal end of the antenna state detection unit is connected with the GPS chip U5, and the geographic position signal output end of the GPS chip U5 is connected with the geographic position signal input end of the controller.
4. The device suitable for genset compression ignition detection as recited in claim 3, wherein the GPS signal processing output unit comprises: the antenna ANT is respectively connected with a first end of a capacitor C201 and a first end of a resistor R201, a second end of the capacitor C201 is respectively connected with a first end of the capacitor C202 and a first end of an inductor L201, a second end of the capacitor C202 is connected with a power ground, a second end of the inductor L201 is connected with a signal input end IN of a signal amplifying chip U15, a ground end GND of the signal amplifying chip U15 is connected with the power ground, an adjusting end PS of the signal amplifying chip U15 and a power end VCC of the signal amplifying chip U15 are respectively connected with a first end of the capacitor C203, a first end of the resistor R203, a first end of the inductor L202 and a +3.3V power supply, a second end of the capacitor C203 is connected with the power ground, a second end of the resistor R203 and a second end of the inductor L202 are respectively connected with a signal output end OUT of the signal amplifying chip U15 and a first end of the inductor L203, a second end of the inductor L203 is respectively connected with a first end of the capacitor C204 and a first end of the resistor R202, a second end of the resistor R201 and a second end, the second terminal of the inductor L155 is connected to the first terminal of the capacitor C288, and the second terminal of the capacitor C288 is connected to the power ground; the second end of the capacitor C204 is connected to the signal INPUT terminal INPUT of the filter chip U14, the ground terminal GND1 of the filter chip U14, the ground terminal GND2 of the filter chip U14 and the ground terminal GND3 of the filter chip U14 are respectively connected to the power ground, the signal OUTPUT terminal OUTPUT of the filter chip U14 is connected to the first end of the capacitor C233, the second end of the capacitor C233 is respectively connected to the first end of the capacitor C144 and the first end of the inductor L55, the second end of the capacitor C144 is connected to the power ground, and the second end of the inductor L55 is connected to the data signal INPUT terminal of the GPS chip U5.
5. The device for detecting compression ignition of a genset as claimed in claim 3, wherein the antenna state detection unit comprises: an emitter of the transistor Q41 is connected with a +3.3V power supply, a first end of the resistor R41 and a first end of the capacitor C48, a second end of the capacitor C48 is connected with a power ground, a second end of the resistor R41 is connected with a base of the transistor Q41 and a collector of the transistor Q42, an emitter of the transistor Q42 is connected with a first end of the capacitor C42, a first end of the capacitor C43 and a power ground, a second end of the capacitor C42, a second end of the capacitor C43 and a collector of the transistor Q41 are connected with a first end of the resistor R44, a first end of the resistor R45 and a first end of the capacitor C44, a second end of the resistor R45 is connected with an emitter of the transistor Q43, a base of the transistor Q43 is connected with a base of the transistor Q44, a collector of the transistor Q43 and a first end of the resistor R46, and a second end of the resistor R46 is connected with; a second end of the resistor R44 and a second end of the capacitor C44 are respectively connected with a first end of the inductor L41 and an emitter of the transistor Q44, a collector of the transistor Q44 is respectively connected with a first end of the resistor R47 and a first end of the resistor R48, and a second end of the resistor R47 is connected with the power ground; the second end of the resistor R48 is connected with an antenna state detection end GPIO8 of the GPS chip U5, the second end of the inductor L41 is respectively connected with the first end of the capacitor C45, the first end of the resistor R49 and an antenna voltage input end V _ ANT of the GPS chip U5, and the second end of the resistor R49 is connected with the antenna state detection end GPIO 11; the base electrode of the triode Q42 is respectively connected with the first end of the capacitor C41, the first end of the capacitor C46, the first end of the resistor R42 and the first end of the resistor R43, the second end of the capacitor C46 and the second end of the resistor R42 are respectively connected with the power ground, and the second end of the capacitor C41 and the second end of the resistor R43 are respectively connected with the antenna feed switch end ANT _ ON of the GPS chip U5.
6. The device for detecting the compression ignition of the generator set according to claim 1, further comprising a wireless transceiver module arranged on the generator set, wherein a transceiver end of the wireless transceiver module is connected with a wireless transceiver end of the controller, and the controller is communicated with a remote terminal through the wireless transceiver module.
7. The device for detecting compression ignition of the generator set according to claim 1, further comprising a first temperature sensor arranged on the generator set and used for measuring the environment of the generator set, a humidity sensor arranged on the generator set and used for measuring the humidity of the environment of the generator set, and a second temperature sensor arranged on an engine cylinder and used for measuring the temperature of an engine cylinder, wherein a temperature signal output end of the first temperature sensor is connected with a first temperature signal input end of the controller, a temperature signal output end of the second temperature sensor is connected with a second temperature signal input end of the controller, and a temperature signal output end of the humidity sensor is connected with a humidity signal input end of the controller.
8. A control method suitable for a compression ignition detection device of a generator set is characterized by comprising the following steps:
s1, initializing the system, sending the air pressure value of the position where the collected generator set is located to the air pressure detection module by the controller, and judging the size of the air pressure value of the position where the collected generator set is located and the preset air pressure value:
if the collected air pressure value of the position of the generator set is smaller than the preset air pressure value, the controller sends an adjusting value signal to the accelerator electromagnetic valve; step S2 is executed;
if the collected air pressure value of the position where the generator set is located is larger than or equal to the preset air pressure value, whether the generator set outputs electric energy to the electric equipment is judged:
if the generator set outputs electric energy to the electric equipment, the generator set is started in a compression ignition mode;
if the generator set does not output electric energy to the electric equipment, the generator set is not started by compression ignition; step S3 is executed;
s2, controlling the injection quantity of the throttle diesel oil to be reduced by the throttle electromagnetic valve according to the regulating value signal sent by the controller; if the throttle diesel injection quantity is less than or equal to the preset diesel injection quantity, executing step S3;
s3, the controller sends a signal for opening the electromagnetic valve to the electromagnetic valve switch, and adjusts the oxygen content of the air to the engine inlet from small to large until the generator set starts compression ignition.
9. The control method adapted to the genset compression ignition detection apparatus according to claim 8, wherein the calculation method of the throttle solenoid valve opening degree includes the steps of:
s11, the remote terminal sends a data acquisition command to the generator set in the plateau area to form a generator set data list in the plateau area;
s12, remote terminal computing
Figure FDA0002311813100000041
H is the altitude corresponding to the geographic position measured by the GPS module, PiThe air pressure value of the position of the generator set is measured by an air pressure detection module; i is the serial number of the generator set,
Figure FDA0002311813100000042
the real-time temperature of the interior of the generator set,
Figure FDA0002311813100000043
the real-time temperature of the environment where the generator set is located; sigma is a conversion proportion coefficient between the air pressure value and the opening degree of the accelerator; qFront sideOpening degree, Q, of an accelerator electromagnetic valve before adjustment of a generator setRear endThe opening degree of an accelerator electromagnetic valve when the generator set is adjusted and is started in compression ignition, P is an air pressure value in a standard condition, s is a humidity value of the environment where the generator set is located, N is the total number of the generator sets in a plateau area, α is an internal temperature regulating factor, β is an environment temperature regulating factor;
s13, the controller calculates the current accelerator opening of the generator set, and the calculation method of the current accelerator opening of the generator set comprises the following steps:
Figure FDA0002311813100000051
q is the opening degree of the throttle electromagnetic valve before the current regulation of the generator set, Q' is the opening degree of the throttle electromagnetic valve after the current regulation of the generator set, T is the temperature value of the environment where the generator set is located, and s is the humidity value of the environment where the generator set is located.
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